<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <center>
        <form action="/bmi">
            <table border="1">
                <tr>
                    <td>height</td>
                    <td><input name="height" type="text"></td>
                </tr>
                <tr>
                    <td>weight</td>
                    <td><input name="weight" type="text"></td>
                </tr>
                <tr>
                    <td colspan="2" align="center"><input type="submit" value="提交"></td>
                </tr>
            </table>
        </form>
    </center>

</body>
</html>